Home / 1,126,903.31-1,554,823.96-643,372.19

Finding the Fourth Proportional to 1,126,903.31, 1,554,823.96 and 643,372.19

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Solution

The fourth proportional to 1,126,903.31, 1,554,823.96 and 643,372.19 is: 887,680.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,903.31 : 1,554,823.96 = 643,372.19 : x
  2. Step 2: Convert to fraction form
    1,126,903.31/1,554,823.96 = 643,372.19/x
  3. Step 3: Cross multiply
    1,126,903.31x = 1,554,823.96 × 643,372.19
  4. Step 4: Simplify right side
    1,126,903.31x = 1,000,330,501,403.60
  5. Step 5: Solve for x
    x = 1,000,330,501,403.60/1,126,903.31
  6. Step 6: Final answer
    x = 887,680.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.